Commensurability effect on the charge ordering of La2-xSrxNiO4

被引：104

作者：

Katsufuji, T

Tanabe, T

Ishikawa, T

Yamanouchi, S

Tokura, Y

Kakeshita, T

Kajimoto, R

Yoshizawa, H

机构：

[1] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

[2] Univ Tokyo, Inst Solid State Phys, Neutron Scattering Lab, Tokai, Ibaraki 3191106, Japan

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.60.R5097

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Measurements of Hall coefficients, thermoelectric power, and optical conductivity spectra were done for single crystals of La2-xSrxNiO4 (x=0.27- 0.50) showing prototypical charge ordering. We found that the character of the carriers in the charge-ordered state changes from electronlike to holelike when the hole concentration p crosses 1/3, and that the correlation gap in the optical spectrum for p=1/3 is collapsed when p is away from 1/3. These results indicate that the deviation of p from 1/3 can be regarded as electron or hole doping into the commensurate charge-ordered state at p=1/3. [S0163-1829(99)50732-7].

引用

收藏

页码：R5097 / R5100

页数：4

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